<template>
  <view>
    <view class="search-box">
      <!-- 基本用法 -->
      <uni-search-bar @input="input" cancelButton="none" :radius="15"></uni-search-bar>
    </view>
    <!-- 搜索建议-->
    <view class="sugg-list" v-if="searchResult.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchResult" :key="i" @click="gotoDetail(item.id)">
        <view class="sugg-item-detail">
          <view class="sugg-item-name">
            {{item.title}}
          </view>
          <view class="sugg-item-content">
            {{item.content}}
          </view>
        </view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>

    <view class="history-box" v-else>
      <view class="history-title">
        <text>历史记录</text>
        <uni-icons type="trash" size="17" @click="deleteHistory"></uni-icons>
      </view>

      <view class="history-list">
        <uni-tag class="uni-tag" :text="item" v-for="(item, i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>

  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer: null,
        kw: '',
        searchResult: [],
        historyList: [],

      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    computed: {
      histories() {
        return [...this.historyList].reverse()
      }
    },
    methods: {
      gotoDetail(activity_id) {
        uni.navigateTo({
          url: '../activity-one-detail/activity-one-detail?query=' + activity_id
        })
      },
      input(e) {
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          this.kw = e.value
          this.getSearchResults()
        }, 500)
      },
      async getSearch(kw){
        console.log(kw)
        const {
          data: res
        } = await uni.$http.get('/activities/search', {
          query: kw
        })
        if (res.code !== 1) return uni.$showMsg()
        this.searchResult = res.data
        
      }
      ,
      getSearchResults() {
        if (this.kw === '') {
          this.searchResult = []
          return
        }
        this.getSearch(this.kw)
        this.saveHistory()
      },
      saveHistory() {
        this.historyList.push(this.kw)
        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      deleteHistory() {
        this.historyList = [];
        uni.setStorageSync('kw', '[]')
      },
      gotoGoodsList(item) {
        // uni.navigateTo({
        //   url: '../activity-one-detail/activity-one-detail?query=' + item
        // })
        this.getSearch(item)
      }

    }
  }
</script>

<style lang="scss">
  .search-box {
    position: sticky;
    top: 0;
    z-index: 999;
  }

  .sugg-list {
    padding: 0 5px;

    .sugg-item {
      font-size: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #efefef;
      display: flex;
      align-items: center;
      justify-content: space-between;

      .sugg-item-detail {
         overflow: hidden;
        text-overflow: ellipsis;
        margin-right: 3px;
        .sugg-item-name {
          font-weight: bold;
          font-size: 14px;
         
        }

        .sugg-item-content {
          //文字不换行
          white-space: nowrap;
          //溢出部分隐藏
          overflow: hidden;
          //文本溢出之后使用...替代
          text-overflow: ellipsis;
          margin-right: 3px;
        }
      }

    }
  }

  .history-box {
    padding: 0 5px;

    .history-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 40px;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }

    .history-list {
      display: flex;
      flex-wrap: wrap;

      .uni-tag {
        margin-top: 5px;
        margin-right: 5px;
      }
    }

  }
</style>
